const createError = require('http-errors');
const express = require('express');
const path = require('path');
const session = require('express-session')
const cookieParser = require('cookie-parser');
const logger = require('morgan');
const MongoStore = require("connect-mongo");
const indexRouter = require('./routes/web/index');
const apiRouter = require('./routes/api/index');

const app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use(session({
  name: 'sid',	//设置cookie的name，默认值是：connect.sid 
  secret: 'atguigu', //参与加密的字符串（又称签名）
  saveUninitialized: false, //是否为每次请求都设置一个cookie用来存储session的id
  resave: true, //是否在每次请求时重新保存session 
  store: MongoStore.create({
    mongoUrl:  'mongodb://lcc:123456@127.0.0.1:27017/book'  //数据库的连接配置
  }),
cookie: {
  httpOnly: true, // 开启后前端无法通过 JS 操作
  maxAge: 1000 * 600 // 这一条 是控制 sessionID 的过期时间的！！！
},
}))
app.use('/', indexRouter);
app.use('/api', apiRouter); 

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
